50G BPSK, 100G SP-QPSK, 200G 8QAM, 400G 64QAM Ultra Long Single Span Unrepeatered Transmission Over 670.64km, 653.35km, 601.93km and 502.13km Respectively.
Jian XuJiekui YuQianggao HuMing LiJiasheng LiuQing LuoLiyan HuangJie LuoHongyan ZhouLei ZhangShugang JiaXiaohong ZhangHaitao ChenPublished in: OFC (2019)